WO2022088075A1 - 携能无线消息的收发系统、方法和设备 - Google Patents

携能无线消息的收发系统、方法和设备 Download PDF

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Publication number
WO2022088075A1
WO2022088075A1 PCT/CN2020/125405 CN2020125405W WO2022088075A1 WO 2022088075 A1 WO2022088075 A1 WO 2022088075A1 CN 2020125405 W CN2020125405 W CN 2020125405W WO 2022088075 A1 WO2022088075 A1 WO 2022088075A1
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signal
analog
digital
frequency
coil
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PCT/CN2020/125405
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English (en)
French (fr)
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何发瑛
赵毓斌
须成忠
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中国科学院深圳先进技术研究院
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Priority to PCT/CN2020/125405 priority Critical patent/WO2022088075A1/zh
Publication of WO2022088075A1 publication Critical patent/WO2022088075A1/zh

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    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02JCIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/20Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02Transmitters
    • H04B1/04Circuits
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06Receivers
    • H04B1/16Circuits
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B1/00Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69Spread spectrum techniques

Definitions

  • the present application belongs to the field of wireless charging, and in particular, relates to a system, method and device for sending and receiving wireless messages.
  • the portable wireless charging technology is a new type of wireless communication and magnetic resonance coupling wireless charging fusion technology. While transmitting wireless information to the wireless signal receiving device, the energy signal can also be transmitted to the wireless signal receiving device. The wireless signal receiving device obtains the energy in the communication signal through the conversion circuit according to the received energy signal.
  • the current transmission of power-carrying wireless messages generally includes separate mechanism power-carrying signal transmission and integrated mechanism power-carrying signal transmission.
  • the modulation technology in wireless communication is used, so that energy transmission and information transmission share a channel.
  • the coupling coil has a fixed resonant frequency
  • the modulated signal is subject to the impedance problem caused by the mutual inductance between the coupling coils, which makes the signal received by the receiving device prone to deformation, frequency shift or signal deformation.
  • One of the purposes of the embodiments of the present application is to provide a system and method for transmitting and receiving wireless messages carrying energy, so as to solve the problem that in the prior art, since the coupling coil has a fixed resonant frequency, the modulated signal is affected by the mutual inductance between the coupling coils.
  • the resulting impedance problem makes the signal received by the receiving device prone to deformation, frequency offset or signal deformation, which is likely to cause the inability to correctly intercept the signal during the filtering process, resulting in decoding errors.
  • a first aspect of the embodiments of the present application provides a transceiver system for carrying wireless messages, the system includes a transmitting device and a receiving device, the transmitting device includes a resonant signal modulation module, a digital-to-analog converter, and a transmitting coil, the The receiving device includes a receiving coil, an analog-to-digital converter, a demodulation module and a rectifying circuit, the transmitting coil and the receiving coil are magnetic resonance coupling coils, wherein,
  • the resonant signal modulation module is used to generate a carrier wave matching the resonant frequency of the coupling coil, and modulate the information to be transmitted according to the carrier wave to obtain a modulated signal;
  • the digital-to-analog converter is used for converting the modulated signal into an analog signal and outputting the analog signal to the transmitting coil, and the transmitting coil is used for transmitting the analog signal to the receiving coil;
  • the receiving coil is used for receiving the analog signal and transmitting the analog signal to the analog-to-digital converter and the rectifier circuit simultaneously, wherein the analog-to-digital converter converts the analog signal to the analog-to-digital converter according to the resonant frequency of the resonant coil.
  • the signal is converted into a digital signal, which is demodulated and processed by the demodulation module to obtain the received message; the rectifier circuit is used for rectifying the analog signal received by the receiving coil to obtain the transmitted electric energy.
  • the signal frame in the modulated signal includes an idle signal segment and a data segment
  • the data segment is the signal frame including all the modulated signals after the carrier wave.
  • the period during which information is to be transmitted, and the idle signal segment is a period in which there is no information in the signal frame.
  • the resonant signal modulation module integrates a phase-locked loop circuit and a numerically controlled oscillator, and the resonant signal modulation module generates an internal For the clock signal, according to the internal clock signal and the information to be transmitted, the frequency control word or the phase control word in the numerically controlled oscillator is adjusted to obtain the modulated signal.
  • the analog-to-digital converter is configured to sample the analog signal according to a preset sampling frequency to obtain a sampling signal; according to the predetermined carrier frequency, the The analog-to-digital converter determines a digital scalar corresponding to the sampled signal, and passes the digital scalar through a trained neural network classification model to obtain a digital signal corresponding to the digital scalar.
  • the neural network classification model adopted by the demodulation module is a support vector machine classification model. After the sudden change, according to the changed system state, the demodulation module uses the support vector machine algorithm to retrain the neural network classification model.
  • the sampling frequency of the analog-to-digital converter is greater than the resonance frequency.
  • the resonant signal modulation module is a first FPGA chip
  • the analog-to-digital converter is a second FPGA chip.
  • an embodiment of the present application provides a method for sending an energy-carrying wireless message, the method comprising:
  • the message to be transmitted is modulated to obtain a modulated signal
  • the modulated signal is converted into an analog signal for transmission through the transmit coil of the magnetic resonance coupling coil.
  • the signal frame in the modulated signal includes an idle signal segment and a data segment
  • the data segment is the signal frame including all the modulated signals after the carrier wave.
  • the period during which information is to be transmitted, and the idle signal segment is a period in which there is no information in the signal frame.
  • the message to be transmitted is modulated according to the generated carrier wave to obtain a modulated signal, including:
  • the internal clock signal and the information to be transmitted are generated through a phase-locked loop, and the frequency control word or the phase control word in the numerically controlled oscillator is adjusted to obtain the modulated signal.
  • an embodiment of the present application provides a method for receiving an energy-carrying wireless message, the method comprising:
  • the digital signal is demodulated by the demodulation module to obtain the received information
  • the received analog signal is rectified by the rectification circuit to obtain the transmitted electric energy.
  • converting the analog signal into a digital signal according to a predetermined carrier frequency includes:
  • the analog signal is sampled according to a preset sampling frequency to obtain a sampling signal, and the sampling frequency is greater than the resonance frequency;
  • a fourth aspect of the embodiments of the present application provides a sending device capable of carrying wireless messages, including a memory, a processor, and a computer program stored in the memory and executable on the processor, the processor executing The computer program implements the steps of the method according to any one of the second aspects.
  • a fifth aspect of the embodiments of the present application provides a receiving device capable of carrying wireless messages, including a memory, a processor, and a computer program stored in the memory and executable on the processor, the processor executing The computer program implements the steps of the method according to any one of the third aspects.
  • a fourth aspect of the embodiments of the present application provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, implements any of the second aspect or the third aspect. the steps of the method described in item.
  • the beneficial effects provided by the embodiments of the present application are: compared with the prior art, the beneficial effects of the embodiments of the present application are: when generating an energy-carrying wireless message, the information to be transmitted is modulated by selecting a carrier wave that matches the resonant frequency of the coupling coil. The modulated signal is obtained, and correspondingly, when receiving the analog signal corresponding to the modulated signal, the receiving device performs analog-to-digital conversion according to the resonant frequency to obtain the digital signal corresponding to the analog signal.
  • the transmitted modulated signal is less affected by the impedance problem caused by mutual inductance, and the frequency offset and signal deformation can be reduced. It is beneficial to improve the decoding accuracy rate.
  • 1a is a schematic diagram of a deformed energy-carrying signal
  • FIG. 1b is a schematic diagram of a transceiver system capable of carrying wireless messages provided by an embodiment of the present application
  • FIG. 2 is a working schematic diagram of a numerically controlled oscillator provided by an embodiment of the present application.
  • FIG. 3 is a schematic structural diagram of a transmitting device provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a demodulation structure of a receiving device provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of a modulated signal provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of a support vector machine classification provided by an embodiment of the present application.
  • FIG. 8 is a schematic diagram of the use of a support vector machine provided by an embodiment of the present application.
  • FIG. 9 is a schematic diagram of a method for sending an energy-carrying wireless message provided by an embodiment of the present application.
  • FIG. 10 is a schematic diagram of a method for receiving an energy-carrying wireless message provided by an embodiment of the present application
  • FIG. 11 is a schematic diagram of a sending/receiving device capable of carrying wireless messages according to an embodiment of the present application.
  • Wireless charging technology is a new type of energy supply method, which gets rid of the shackles of traditional electric power cables.
  • Wireless charging technology loads a certain frequency of energy signals into the transmitting coil through a power amplifier to form energy-carrying electromagnetic waves, which are propagated to the receiving coil through a medium such as air, so that the charged device can obtain energy.
  • the integration of wireless communication and wireless charging technology has created a technology that enables parallel transmission of information and energy, that is, energy-carrying information transmission technology.
  • Radio waves are not only the carrier of energy, but also the carrier of information.
  • the energy-carrying information transmission technology of the separate mechanism includes two different operating frequencies, which are respectively used for energy transmission and information transmission, and the operating frequency used for energy transmission is higher than that of information transmission. Since the two operate separately and independently, the system includes coils for information transmission in addition to the coils for radiating and receiving energy. Due to the existence of two coils with different functions and the mutual inductance problem between the coils, the impedance matching problem, which was originally difficult to analyze, is more complicated. In addition, two different operating frequencies are added for transmission and interfere with each other, which is easy to lead to the decoding accuracy of the receiving end or the receiving device, which will lead to a relatively low overall energy conversion efficiency of the system.
  • the energy-carrying high-frequency signal is modulated to obtain an energy-carrying wireless message signal.
  • the energy-carrying wireless message signal reaches the receiving coil through the medium, and the system starts energy conversion and information decoding at the same time. Since the coupling coil has a certain resonant frequency, the modulated signal is affected by the impedance problem caused by mutual inductance between the coupling coils, and the modulated signal passes through the power amplifier, space factors, etc., so that the signal at the receiving end is deformed to a certain extent, and The frequency offset makes the filtering process unable to correctly intercept the signal, resulting in decoding errors, and the impact is more serious under high bit rate communication. For example, in the schematic diagram of the deformed energy-carrying signal shown in FIG. 1a , the amplitude of the energy-carrying signal is obviously deformed.
  • the present application provides an energy-carrying wireless message transceiver system.
  • the message to be transmitted is modulated, for example, the resonant frequency can be obtained.
  • It demodulates the received signal based on the carrier frequency, which can effectively reduce the influence of the resonance frequency on the signal deformation.
  • neural network classification models such as support vector machines, so that the signal at the receiving end will be deformed to a certain extent due to power amplifiers, space factors, etc. Has high decoding ability.
  • FIG. 1b is a schematic diagram of a transceiver system capable of carrying wireless messages according to an embodiment of the present application.
  • the system includes: the system includes a transmitting device and a receiving device, and the transmitting device includes a resonant signal modulation module and a digital-to-analog converter. and a transmitting coil, the receiving device includes a receiving coil, an analog-to-digital converter, a demodulation module and a rectifier circuit, the transmitting coil and the receiving coil are magnetic resonance coupling coils, wherein,
  • the resonant signal modulation module is used to generate a carrier wave matching the resonant frequency of the coupling coil, and modulate the information to be transmitted according to the carrier wave to obtain a modulated signal;
  • the digital-to-analog converter is used for converting the modulated signal into an analog signal and outputting the analog signal to the transmitting coil, and the transmitting coil is used for transmitting the analog signal to the receiving coil;
  • the receiving coil is used for receiving the analog signal and transmitting the analog signal to the analog-to-digital converter and the rectifier circuit simultaneously, wherein the analog-to-digital converter converts the analog signal to the analog-to-digital converter according to the resonant frequency of the resonant coil.
  • the signal is converted into a digital signal, which is demodulated and processed by the demodulation module to obtain the received message; the rectifier circuit is used for rectifying the analog signal received by the receiving coil to obtain the transmitted electric energy.
  • the resonant signal modulation module can be used to generate a carrier wave for modulation, receive information to be transmitted, and load the received information to be transmitted on the carrier wave to obtain a modulated signal.
  • the resonant signal modulation module can be integrated in FPGA.
  • the FPGA in the transmitting device we call the FPGA in the transmitting device the first FPGA, and the FPGA in the receiving device as the second FPGA.
  • the resonant signal modulation module can also be other processors, including, for example, ARM, DSP, and the like.
  • the resonant signal modulation module When the resonant signal modulation module is integrated in the FPGA, it can be generated by a core module numerically controlled oscillator (abbreviated as NCO in English) in the FPGA.
  • Figure 2 shows the working schematic diagram of the numerically controlled oscillator, in which the clock signal Fclk can be generated by the phase-locked loop of the core in the FPGA, and the required clock frequency is obtained after N times of steps.
  • the frequency control word sends the received frequency control word to the phase accumulator, the phase accumulator counts the system clock, and the phase is accumulated every time the value of the input frequency control word is reached, and then the accumulated value is sent to Enter the phase adder, add the initial phase received by the phase control word register, perform the initial phase offset, get the current phase to be output, and send this value as the sampling address value to the amplitude P phase conversion circuit, look up the table to obtain the positive Cosine signal samples.
  • the system only needs to change the frequency control word and/or the phase control word according to the coded data of the information to be sent, and directly perform frequency modulation or phase modulation to generate the required modulated signal (sinusoidal signal), which can greatly reduce development. cycle.
  • the frequency formula of the modulated signal shown in Figure 2 is: Among them, Fout is the output frequency, Fc is the frequency control word, and M is the number of bits of the phase accumulator.
  • the sampling frequency should be greater than the output frequency of the transmitting device when the digital-to-analog converter is sampling, that is, the sampling frequency is greater than the resonant frequency.
  • the sampling frequency may be a predetermined multiple of the resonant frequency, and the predetermined multiple is greater than 1, usually more than 2 times, for example, 10 times may be selected. .
  • the input and output pins of the FPGA can receive the information to be transmitted, and the phase-locked loop (PLL) in the FPGA core can generate a carrier frequency consistent with the resonant frequency of the coupling coil through frequency multiplication .
  • the frequency control word and/or the phase control word in the numerically controlled oscillator are adjusted by the data in the information to be transmitted, so as to obtain a modulated signal carrying the wireless message.
  • the modulated signal is converted into an analog signal by a high-speed digital-to-analog converter, and transmitted through the transmitting coil.
  • the modulation method of FSK frequency shift keying
  • a high-frequency sinusoidal signal with the same resonance frequency as the coupling coil is generated in the FPGA in the transmitting end as the center frequency of the energy-carrying signal, And output to the transmitter coil through the digital-to-analog converter.
  • Figure 4 is a schematic diagram of the demodulation structure of the receiving device.
  • the energy-carrying wireless message signal transmitted through the medium is received by the receiving coil, and converted through the analog-to-digital converter to obtain a data message that can be processed by the second FPGA. Since the energy-carrying signal collected by the coupling coil of the receiving device is an unbalanced alternating current, the alternating current can be converted into a stable direct current current through a full-wave rectifier circuit.
  • the other branch connected with the coupled receiving coil is a signal sampling circuit.
  • the signal sampling frequency should be greater than the resonant frequency, for example, it may be a predetermined multiple greater than 1 of the resonant frequency. According to the resonance frequency, the data value of the sampling point can be obtained, and the data value of the sampling point is decoded by the demodulation module to obtain the received data message.
  • the signal frame of the modulated signal may include an idle signal segment and a data segment, wherein the information to be transmitted after carrier modulation is sent in the data segment, and the idle signal segment is sent in the data segment.
  • a segment is a no-signal period that does not include the resonant frequency and transmit data. Since each signal frame includes an idle signal segment, after the signal frame is transmitted, the detected signal suddenly changes to "0", and the receiving device can determine that the signal frame has been received. As shown in the schematic diagram of the modulated signal shown in FIG. 5 , when the signal sampled by the system starts to suddenly change from “0”, the receiving device can determine that the signal frame starts to be transmitted. Therefore, by setting the idle signal segment, the efficiency of wireless energy transmission and signal transmission are not affected, and it can be ensured that the demodulation starts from the head of the data frame, which is beneficial to ensure the accuracy of the demodulation.
  • a neural network classification model may be used to classify the sampled data signals.
  • a support vector machine full name in English called support vector machines, abbreviated as SVM in English
  • SVM support vector machines
  • the signal at the sampling point can be converted into a digital scalar according to the carrier frequency, and model training or calculation can be performed with this feature.
  • the sample data with known labels (1 or 0) can be used for modulation and transmission.
  • FIG. 6 is a schematic diagram of SVM classification provided by this embodiment of the present application. Assuming that the features of two different signals (0 and 1) are on a two-dimensional plane and are linearly separable, a straight line can be used to separate the two types of signals. The data is separated. This straight line is similar to a hyperplane. The first side of the hyperplane represents the waveform of symbol 1, and the second side represents the waveform of symbol 0.
  • i the ith sample
  • n the sample size
  • the sampled value obtained according to the sampling is used as the input of the model, and it can be determined whether the information carried by the signal is 0 or 1.
  • the signal frame carrying the wireless message includes the 0# frame and the 1# frame, where the 0# frame is an idle signal segment, and 1# represents the data segment .
  • the support vector machine can be trained through the calibrated sample data, the parameter values in the support vector machine can be determined, and the corresponding relationship between the trained support vector machine and the system state parameters can be established. It is verified by experiments that the accuracy rate of the energy-carrying wireless message transmission method adopted in the embodiment of the present application can reach more than 95%.
  • the neural network classification model can be retrained according to the calibrated sample data.
  • the trained model for analog-to-digital conversion. It is beneficial to improve the adaptability of the system in different states.
  • the method for sending an energy-carrying wireless message shown in FIG. 9 may also be included, as shown in FIG. 9 , including:
  • the resonant frequencies of the transmitting coil and the receiving coil are the same, and the set value input by the staff can be received according to the resonant frequency of the resonant coil (transmitting coil and receiving coil) selected by the system.
  • the resonant frequency should be determined according to the magnitude of the signal received by the receiving device by transmitting signals of different frequencies through the transmitting device.
  • the clock frequency can be generated by the phase-locked loop in the core of the FPGA as the modulated carrier frequency.
  • the frequency of the output signal can be adjusted through the frequency control word or the phase control word in the numerically controlled oscillator to obtain the modulated signal of the information to be transmitted.
  • the modulated signal includes an idle time segment and a data segment
  • the information to be transmitted after carrier modulation is sent in the data segment
  • the idle signal segment is an idle signal segment that does not include the resonant frequency and the transmitted data. signal period. Therefore, the starting position and the ending position of the data can be more accurately identified, and the accuracy of the data demodulation can be improved.
  • S904 Convert the modulated signal into an analog signal, so that the magnetic resonance coupling coil sends the analog signal.
  • the resonant frequency is determined as the carrier frequency, so that when the modulated signal is sent, the frequency offset and the deformation of the signal are reduced.
  • FIG. 10 provides a schematic diagram of a method for receiving an energy-carrying wireless message, including:
  • S1002 Convert the analog signal into a digital signal according to a predetermined carrier frequency, where the carrier frequency matches the resonance frequency of the magnetic resonance coupling coil.
  • the received analog signal is a signal modulated according to the resonant frequency, so the sampling value of the sampling point can be determined according to the resonant frequency.
  • the analog signal can be sampled at a preset sampling frequency to obtain a sampling signal, and the sampling frequency is greater than the resonance frequency; the digital scalar corresponding to the sampling signal is determined according to the predetermined carrier frequency; The digital scalar is input into the trained neural network classification model to obtain a digital signal corresponding to the digital scalar.
  • the method for receiving an energy-carrying wireless message and the method for transmitting an energy-carrying wireless message shown in the embodiments of the present application correspond to the system for sending and receiving an energy-carrying wireless message shown in FIG. 1 .
  • the present application also provides a device for sending an energy-carrying wireless message corresponding to a method for sending an energy-carrying wireless message, including:
  • a resonance frequency determination unit for determining the resonance frequency of the coupling coil for the magnetic resonance of the transmission signal
  • a carrier wave generating unit configured to generate a carrier wave for modulation according to the resonant frequency
  • a modulation unit configured to modulate the message to be transmitted according to the generated carrier wave to obtain a modulated signal
  • a signal sending unit configured to convert the modulated signal into an analog signal, so that the coupling coil of the magnetic resonance sends the analog signal.
  • a device for receiving wireless messages with energy corresponding to the method for receiving wireless messages comprising:
  • a signal receiving unit for receiving an analog signal through the coupling coil of the magnetic resonance
  • a conversion unit configured to convert the analog signal into a digital signal according to a predetermined carrier frequency, wherein the carrier frequency matches the resonant frequency of the coupling coil;
  • the rectifying unit is used for rectifying the received analog signal through the rectifying circuit to obtain the transmitted electric energy.
  • FIG. 11 is a schematic diagram of a sending/receiving device capable of carrying wireless messages according to an embodiment of the present application.
  • the sending/receiving device 11 capable of carrying wireless messages in this embodiment includes: a processor 110 , a memory 111 , and a computer program 112 stored in the memory 111 and running on the processor 110 , for example, to carry wireless message sending/receiving procedures.
  • the processor 110 executes the computer program 112
  • the steps in each of the above-mentioned embodiments of the method for sending/receiving an energy-carrying wireless message are implemented.
  • the processor 110 executes the computer program 112
  • the functions of the modules/units in the foregoing device embodiments are implemented.
  • the computer program 112 may be divided into one or more modules/units, and the one or more modules/units are stored in the memory 111 and executed by the processor 110 to complete the this application.
  • the one or more modules/units may be a series of computer program instruction segments capable of accomplishing specific functions, and the instruction segments are used to describe the execution of the computer program 112 in the transmission/reception device 11 capable of carrying wireless messages process.
  • the sending/receiving device capable of carrying wireless messages may include, but is not limited to, the processor 110 and the memory 111 .
  • FIG. 11 is only an example of the sending/receiving device 11 capable of carrying wireless messages, and does not constitute a limitation on the sending/receiving device 11 capable of carrying wireless messages, and may include more or more than shown in the figure. Fewer components, or a combination of some components, or different components, for example, the sending/receiving device capable of carrying wireless messages may also include an input/output device, a network access device, a bus, and the like.
  • the so-called processor 110 may be a central processing unit (Central Processing Unit, CPU), or other general-purpose processors, digital signal processors (Digital Signal Processors, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), Off-the-shelf programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the memory 111 may be an internal storage unit of the sending/receiving device 11 capable of carrying wireless messages, such as a hard disk or memory of the sending/receiving device 11 capable of carrying wireless messages.
  • the memory 111 may also be an external storage device of the sending/receiving device 11 capable of carrying wireless messages, such as a plug-in hard disk equipped on the sending/receiving device 11 capable of carrying wireless messages, a smart memory card (Smart memory card). Media Card, SMC), secure digital (Secure Digital, SD) card, flash memory card (Flash Card), etc.
  • the memory 111 may also include both an internal storage unit of the wireless message-carrying sending/receiving device 11 and an external storage device.
  • the memory 111 is used for storing the computer program and other programs and data required by the wireless message-carrying sending/receiving device.
  • the memory 111 may also be used to temporarily store data that has been output or will be output.
  • the disclosed apparatus/terminal device and method may be implemented in other manners.
  • the apparatus/terminal device embodiments described above are only illustrative.
  • the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods, such as multiple units. Or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the above-mentioned integrated units may be implemented in the form of hardware, or may be implemented in the form of software functional units.
  • the integrated modules/units if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium.
  • the present application can implement all or part of the processes in the methods of the above embodiments, and can also be completed by instructing the relevant hardware through a computer program.
  • the computer program can be stored in a computer-readable storage medium, and the computer When the program is executed by the processor, the steps of the foregoing method embodiments can be implemented.
  • the computer program includes computer program code, and the computer program code may be in the form of source code, object code, executable file or some intermediate form, and the like.
  • the computer-readable medium may include: any entity or device capable of carrying the computer program code, a recording medium, a U disk, a removable hard disk, a magnetic disk, an optical disk, a computer memory, a read-only memory (ROM, Read-Only Memory) , Random Access Memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium, etc.
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • electric carrier signal telecommunication signal and software distribution medium, etc.
  • the content contained in the computer-readable media may be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction, for example, in some jurisdictions, according to legislation and patent practice, the computer-readable media Excluded are electrical carrier signals and telecommunication signals.

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Abstract

本申请属于无线充电领域,提供了一种携能无线消息的收发系统、方法和设备,该方法包括:确定用于发射信号的磁共振的耦合线圈的谐振频率;根据所述谐振频率,生成用于调制的载波;根据所生成的载波,对待发射信息进行调制,得到已调制信号;将所述已调制信号转换为模拟信号,以使磁共振的耦合线圈发送所述模拟信号。由于待发送信号和能量以谐振频率为载波进行调制,不需要使用功率放大器,简化了系统框架,还可以减少频率的偏移和信号的形变,有利于提高解码正确率。

Description

携能无线消息的收发系统、方法和设备 技术领域
本申请属于无线充电领域,尤其涉及携能无线消息的收发系统、方法和设备。
背景技术
携能无线充电技术,是一种新型的无线通信和磁共振耦合无线充电融合技术。在向无线信号接收设备传输无线信息的同时,还可以向无线信号接收设备传输能量信号。无线信号接收设备根据所接收到的能量信号,通过转换电路,获取通信信号中的能量。
目前的携能无线消息的传输一般包括分离式机制携能信号传输和综合式机制携能信号传输。综合式机制中,采用无线通信中的调制技术,使能量传输和信息传输共用一条信道。然而,由于耦合线圈有固定的谐振频率,调制后的信号受到耦合线圈之间因互感而产生的阻抗问题,使得接收设备所接收到的信号容易发生形变,频率的偏移或信号的形变,在滤波过程中容易造成无法正确截取信号,导致解码错误。
技术问题
本申请实施例的目的之一在于:提供一种携能无线消息的收发系统和方法,以解决现有技术中由于耦合线圈有固定的谐振频率,调制后的信号由于受到耦合线圈之间因互感而产生的阻抗问题,使得接收设备所接收到的信号容易发生形变,频率的偏移或信号的形变,在滤波过程中容易造成无法正确截取信号,导致解码错误的问题。
技术解决方案
为解决上述技术问题,本申请实施例采用的技术方案是:
本申请实施例的第一方面提供了一种携能无线消息的收发系统,所述系统包括发射设备和接收设备,所述发射设备包括谐振信号调制模块、数模转换器和发射线圈,所述接收设备包括接收线圈、模数转换器、解调模块和整流电路,所述发射线圈和所述接收线圈为磁共振的耦合线圈,其中,
所述谐振信号调制模块用于生成与所述耦合线圈的谐振频率匹配的载波,并根据所述载波对待发射信息进行调制得到已调制信号;
所述数模转换器用于将所述已调制信号转换为模拟信号并将所述模拟信号输出至所述发射线圈,所述发射线圈用于发射所述模拟信号至所述接收线圈;
所述接收线圈用于接收所述模拟信号并将所述模拟信号同时传至所述模数转换器和所述整流电路,其中所述模数转换器根据谐振线圈的谐振频率,将所述模拟信号转换为数字信号,通过所述解调模块解调处理以得到所接收的消息;所述整流电路用于将所述接收线圈所接收的所述模拟信号进行整流,得到传输的电能。
结合第一方面,在第一方面的第一种可能实现方式中,所述已调制信号中的信号帧包括空闲信号段和数据段,所述数据段为信号帧中包括经过载波调制后的所述待发射信息的时段,所述空闲信号段为信号帧中无信息的时段。
结合第一方面,在第一方面的第二种可能实现方式中,所述谐振信号调制模块集成有锁相环电路和数控振荡器,所述谐振信号调制模块通过所述锁相环电路生成内部时钟信号,根据所述内部时钟信号和所述待发射信息,调整所述数控振荡器中的频率控制字或相位控制字,得到所述已调制信号。
结合第一方面,在第一方面的第三种可能实现方式中,所述模数转换器用于根据预设的采样频率对所述模拟信号进行采样得到采样信号;根据预先确定的载波频率,所述模数转换器确定所述采样信号对应的数字标量,并将所述数字标量通过已训练的神经网络分类模型,得到所述数字标量对应的数字信号。
结合第一方面的第三种可能实现方式,在第一方面的第四种可能实现方式中,所述解调模块采用的所述神经网络分类模型为支持向量机分类模型,当监测到系统状态发性改变后,根据改变后的系统状态,所述解调模块采用支持向量机算法重新训练所述神经网络分类模型。
结合第一方面的第三种可能实现方式,在第一方面的第五种可能实现方式中,所述模数转换器的采样频率大于所述谐振频率。
结合第一方面、第一方面的第一种可能实现方式、第一方面的第二种可能实现方式、第一方面的第三种可能实现方式、第一方面的第四种可能实现方式或第一方面的第五种可能实现方式,在第一方面的第六种可能实现方式中,所述谐振信号调制模块为第一FPGA芯片,所述模数转换器为第二FPGA芯片。
第二方面,本申请实施例提供了一种携能无线消息的发送方法,所述方法包括:
确定用于发射信号的磁共振的耦合线圈的谐振频率;
根据所述谐振频率,生成用于调制的载波;
根据所生成的载波,对待发射消息进行调制,得到已调制信号;
将所述已调制信号转换为模拟信号,以便于通过磁共振的耦合线圈的发射线圈发送所述模拟信号。
结合第二方面,在第二方面的第一种可能实现方式中,所述已调制信号中的信号帧包括空闲信号段和数据段,所述数据段为信号帧中包括经过载波调制后的所述待发射信息的时段,所述空闲信号段为信号帧中无信息的时段。
结合第二方面,在第二方面的第二种可能实现方式中,根据所生成的载波,对待发射消息进行调制,得到已调制信号,包括:
通过锁相环生成内部时钟信号和待发射信息,调整数控振荡器中的频率控制字或相位控制字,得到所述已调制信号。
第三方面,本申请实施例提供了一种携能无线消息的接收方法,所述方法包括:
通过磁共振的耦合线圈的接收线圈接收模拟信号;
根据预先确定的载波频率,将所述模拟信号转换为数字信号,其中,所述载波频率与所述磁共振的耦合线圈的谐振频率匹配;
通过解调模块对所述数字信号进行解调处理,得到所接收的信息;
通过整流电路将所接收的模拟信号进行整流,得到传输的电能。
结合第三方面,在第三方面的第一种可能实现方式中,根据预先确定的载波频率,将所述模拟信号转换为数字信号,包括:
根据预设的采样频率对所述模拟信号进行采样得到采样信号,所述采样频率大于谐振频率;
根据预先确定的载波频率,确定所述采样信号对应的数字标量;
将所述数字标量输入已训练的神经网络分类模型,得到所述数字标量对应的数字信号。
本申请实施例的第四方面提供了一种携能无线消息的发送设备,包括存储器、处理器以及存储在所述存储器中并可在所述处理器上运行的计算机程序,所述处理器执行所述计算机程序时实现如第二方面任一项所述方法的步骤。
本申请实施例的第五方面提供了一种携能无线消息的接收设备,包括存储器、处理器以及存储在所述存储器中并可在所述处理器上运行的计算机程序,所述处理器执行所述计算机程序时实现如第三方面任一项所述方法的步骤。
本申请实施例的第四方面提供了一种计算机可读存储介质,所述计算机可读存储介质存储有计算机程序,所述计算机程序被处理器执行时实现如同学二方面或第三方面任一项所述方法的步骤。
有益效果
本申请实施例提供的有益效果在于:本申请实施例与现有技术相比存在的有益效果是:在生成携能无线消息时,通过选择与耦合线圈的谐振频率匹配的载波对待发射信息进行调制得到已调制信号,相应的,接收设备在接收到已调制信号对应的模拟信号时,根据谐振频率进行模数转换,得到模拟信号对应的数字信号。由于待发送信号和能量以磁共振的耦合线圈的谐振频率为载波进行调制,使得所发送的已调制信号受到互感而产生的阻抗问题的影响更小,可以减少频率的偏移和信号的形变,有利于提高解码正确率。
附图说明
为了更清楚地说明本申请实施例中的技术方案,下面将对实施例或示范性技术描述中所需要使用的附图作简单地介绍,显而易见地,下面描述中的附图仅仅是本申请的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其它的附图。
图1a为发生形变的携能信号的示意图;
图1b是本申请实施例提供的一种携能无线消息的收发系统的示意图;
图2是本申请实施例提供的数控振荡器的工作示意图;
图3是本申请实施例提供的发射设备的结构示意图;
图4是本申请实施例提供的接收设备的解调结构示意图;
图5是本申请实施例提供的已调制信号示意图中;
图6是本申请实施例提供的支持向量机分类示意图;
图7是本申请实施例提供的分类函数计算与分类结果的对应关系示意图;
图8是本申请实施例提供的支持向量机使用示意图;
图9是本申请实施例提供的携能无线消息的发送方法示意图;
图10是本申请实施例提供的携能无线消息的接收方法示意图;
图11是本申请实施例提供的携能无线消息的发送/接收设备的示意图。
本发明的实施方式
以下描述中,为了说明而不是为了限定,提出了诸如特定系统结构、技术之类的具体细节,以便透彻理解本申请实施例。然而,本领域的技术人员应当清楚,在没有这些具体细节的其它实施例中也可以实现本申请。在其它情况中,省略对众所周知的系统、装置、电路以及方法的详细说明,以免不必要的细节妨碍本申请的描述。
为了说明本申请所述的技术方案,下面通过具体实施例来进行说明。
无线充电技术是一种新型的能量供应方式,摆脱了传统电能需要线缆的束缚。无线充电技术把一定频率能量信号通过功率放大器加载到发射线圈形成携能电磁波,通过空气等介质传播到接收线圈,以使得被充电设备获得能量。将无线通讯方式与无线充电技术整合,诞生了一种使得信息与能量可以并行传输的技术,即携能信息传输技术。
目前的无线充电技术,包括电磁感应式、磁共振耦合式和微波式。其中,磁共振耦合式是基于共振原理,将一定频率的电磁波从发射端向外辐射,接收端收集辐射出来的能量,从而实现能量传输。其中,无线电波即是能量的载体,也是信息的载体。
目前的携能信息传输大致有两种:分离式机制携能信息传输和综合式机制携能信息传输。其中:
分离式机制的携能信息传输技术,包括两种不同的工作频率,分别用于能量传输和信息传输,且用于能量传输的工作频率高于信息传输的工作频率。由于两者分开独立运行,因此,系统除了用于辐射和接收能量的线圈之外,还包括进行信息传输的线圈。由于存在两种不同功能的线圈,且线圈之间存在着互感问题,使得原本难以分析的阻抗匹配问题更加复杂。而且两种不同的工作频率相加传输,相互干扰,容易引接收端或接收设备的解码的准确率,因而会导致系统的整体能量转换效率较为低下。
综合式机制下,能量传输与信息传输共用同一高频信号。携能高频信号经过调制处理,得到携能无线消息信号。携能无线消息信号经过介质到达接收线圈,系统同时开始能量转换和信息解码。由于耦合线圈有一定的谐振频率,调制后的信号受到耦合线圈之间因互感而产生的阻抗问题,以及调制后的信 号通过功率放大器、空间因素等原因,使得接收端的信号发生一定的形变,以及频率的偏移,使得滤波过程无法正确截取信号,导致解码错误,在高比特率的通讯下影响更为严重。比如图1a所示为发生形变的携能信号示意图中,携能信号的振幅发生了较为明显的变形。
针对上述两种机制的携能信息信号传输的缺点,本申请提供了一种携能无线消息的收发系统,通过生成耦合线圈的谐振频率匹配的载波对待发射消息进行调制,比如可以得到以谐振频率为中心的调制信号,基于载波频率对接收的信号进行解调,从而能够有效的减少谐振频率对信号形变的影响。并且可以通过支持向量机等神经网络分类模型进行解调,减少因功率放大器、空间因素等原因,使得接收端的信号发生一定的形变,以及频率的偏移的影响,使得系统在高比特率下仍具有很高的解码能力。
如图1b为本申请实施例提供的一种携能无线消息的收发系统的示意图,该系统包括:所述系统包括发射设备和接收设备,所述发射设备包括谐振信号调制模块、数模转换器和发射线圈,所述接收设备包括接收线圈、模数转换器、解调模块和整流电路,所述发射线圈和所述接收线圈为磁共振的耦合线圈,其中,
所述谐振信号调制模块用于生成与所述耦合线圈的谐振频率匹配的载波,并根据所述载波对待发射信息进行调制得到已调制信号;
所述数模转换器用于将所述已调制信号转换为模拟信号并将所述模拟信号输出至所述发射线圈,所述发射线圈用于发射所述模拟信号至所述接收线圈;
所述接收线圈用于接收所述模拟信号并将所述模拟信号同时传至所述模数转换器和所述整流电路,其中所述模数转换器根据谐振线圈的谐振频率,将所述模拟信号转换为数字信号,通过所述解调模块解调处理以得到所接收的消息;所述整流电路用于将所述接收线圈所接收的所述模拟信号进行整流,得到传输的电能。
其中,谐振信号调制模块可用于生成用于调制的载波,以及接收待发射信息,并将所接收的待发射信息加载至载波,得到已调制信号。
由于FPGA(中文全称为现场可编程门阵列,英文全称为Field Programmable Gate Array)具有丰富的输入输出接口,以及内核资源丰富,可以将所述谐振信号调制模块集成在FPGA中。为了区分接收设备中的FPGA,我们称发射设备中的FPGA为第一FPGA,接收设备中的FPGA为第二FPGA。当然,不局限于FPGA,谐振信号调制模块还可以为其它处理器,包括如ARM、DSP等。
当所述谐振信号调制模块集成在FPGA中时,可以由FPGA中的内核模块数控振荡器(英文简称为NCO)产生。如图2所示为数控振荡器的工作示意图,其中的时钟信号Fclk可以由FPGA中的内核的锁相环产生,经过N倍分步后,得到所需要的时钟频率。
如图2所示,频率控制字将接收到的频率控制字送入相位累加器,相位累加器对系统时钟进行计数,每到达输入频率控制字的值即对相位进行累加,随后将累加值送入相位加法器,与相位控制字寄存 器接收到的初始相位相加,进行初始相位偏移,得到要输出的当前相位,将该值作为取样地址值送入幅度P相位转换电路,查表获得正余弦信号样本。
因此,系统只需要根据待发送信息的编码数据,改变频率控制字和/或相位控制字,直接进行频率调制或相位调制,产生所需要的已调制信号(正弦信号),从而能够大大的减少开发周期。其中,图2所示的已调制信号的频率公式为:
Figure PCTCN2020125405-appb-000001
其中Fout为输出频率,Fc为频率控制字,M为相位累加器的比特数。
由于本系统的谐振频率为高频信号,为了保证信号输出圆滑和准确,在数模转换器进行采样时,采样频率应当大于发射设备的输出频率,即采样频率大于谐振频率。可能的实现方式中,采样频率可以为谐振频率的预定倍数,且该预定倍数大于1,通常选择2倍以上,比如可以选择10倍。。
如图3所示的发射设备的结构示意图中,FPGA的输入输出引脚可以接收待发射信息,FPGA内核中的锁相环(PLL)可以通过倍频产生与耦合线圈的谐振频率一致的载波频率。通过待发射信息中的数据,调整数控振荡器中的频率控制字和/或相位控制字,从而得到携能无线消息的已调制信号。通过高速的数模转换器,将该已调制信号转换为模拟信号,经由发射线圈进行发射。
本申请对待发射信息进行调制,可以采用FSK(频移键控)的调制方式,在发射端中的FPGA中产生一个与耦合线圈的谐振频率相同的高频正弦信号作为携能信号的中心频率,并通过数模转换器输出到发射线圈。
如图4所示为接收设备的解调结构示意图,在接收设备端,通过接收线圈接收经由介质传送的携能无线消息信号,通过模数转换器,转换得到可由第二FPGA可处理数据消息。由于接收设备的耦合线圈收集到的携能信号为不平衡的交变电流,因此,可以通过全波整流电路,使交变电流转换为平稳的直流电流。
与耦合的接收线圈连接的另一支路为信号采样电路。为了保证信号采样的准确性,信号采样频率应当大于谐振频率,比如可以为谐振频率的大于1的预定倍数。根据谐振频率,可以得到采样点的数据值,通过解调模块对采样点的数据值进行解码,得到所接收的数据消息。
在本申请的一种可能的实现方式中,已调制信号的信号帧中可以包括空闲信号段和数据段,其中经过载波调制后的所述待发射信息在所述数据段发送,所述空闲信号段为不包括谐振频率和发送数据的无信号时段。由于每个信号帧中包括空闲信号段,因此,当该信号帧传送完毕后,检测到的信号突变为“0”,接收设备可以确定该信号帧接收完毕。如图5所示已调制信号示意图中,当系统采样的信号从“0”开始突变,接收设备可以确定该信号帧开始传送。因此,通过设定空闲信号段,即不影响无线能量传输的效率,也不影响信号的传输,并且可以保证解调是从数据帧的头部开始解调,有利于保证解调的准确度。
为了简化系统框架,提高系统解调得到的消息的准确率,在本申请实施例的一种实现方式中,可以通过神经网络分类模型对采样得到的数据信号进行分类。比如,可以采用支持向量机(英文全称为support vector machines,英文简称为SVM)模型,对数据进行二分类的广义线性分离。通过选用SVM模型进行分类,可以有效的保证无线佳能时高速通信解码的准确率,简化传统解调的滤波器设计和信号运算的复杂过程。
在使用支持向量机分类时,可以根据载波频率,将采样点的信号转化为数字标量,并以此为特征进行模型训练或计算。在进行模型训练时,可以使用已知标签(为1或0)的样本数据经过调制发射,在接收到样本数据对应的模块信号时,根据采样点的信号以及对应的标签,输入支持向量机进行训练。
如图6所示为本申请实施例提供的支持向量机分类示意图,假设有两个不同的信号(0和1)的特征在一个二维平面上且线性可分,可以用一条直线将两类数据分开,此直线类似于一个超平面,超平面第一边代表码元1的波形,第二边代表码元为0的波形。
假设采样点的信号的数字标量为
Figure PCTCN2020125405-appb-000002
对应的标签为
Figure PCTCN2020125405-appb-000003
包括n个样本的集合D为:
Figure PCTCN2020125405-appb-000004
Figure PCTCN2020125405-appb-000005
其中,i表示第i个样本,n表示样本容量。
支持向量机解决的问题就是寻找最佳超平面使两者分开。如图7所示的分类函数计算与分类结果的对应关系示意图中,将样本数据代入分类函数:
Figure PCTCN2020125405-appb-000006
计算分类函数中的参数
Figure PCTCN2020125405-appb-000007
b,p。若
Figure PCTCN2020125405-appb-000008
则对应y=1的数据点,即对应标签1,反之则对应y=-1的数据点,即对应标签0。
当模型训练好后,根据采样得到采样值作为模型的输入,即可判断信号所携带的信息是0还是1。
在本申请实施例中,如图8所示的支持向量机使用示意图,携能无线消息的信号帧包括0#帧和1#帧,其中,0#帧为空闲信号段,1#表示数据段。在通过支持向量机进行模数转换时,可以通过已标定的样本数据对该支持向量机进行训练,确定支持向量机中的参数数值,建立已训练的支持向量机与系统状态参数的对应关系。经实验验证,本申请实施例所采用的携能无线消息的传送方法,准确率可以达到95%以上。
当系统的状态发生改变,包括如谐振频率改变、调制方式改变、数据帧格式改变或采样频率改变等,可以根据已标定的样本数据重新对神经网络分类模型进行训练,根据当前的系统状态所对应的已训练模型进行模数转换。有利于提高系统在不同状态下的适应能力。
另外,在本申请可能的实现方式中,还可以包括图9所示的携能无线消息的发送方法,如图9所示,包括:
S901,确定用于发射信号的磁共振的耦合线圈的谐振频率。
在本申请实施例中,发射线圈和接收线圈的谐振频率相同,可以根据系统所选用的谐振线圈(发射线圈和接收线圈)的谐振频率,接收工作人员所输入的设定值。或者,也要以通过发射设备发射不同 频率的信号,根据接收设备所接收的信号的大小来确定谐振频率。
S902,根据所述谐振频率,生成用于调制的载波。
根据谐振频率的大小,可以通过FPGA的内核中的锁相环生成时钟频率,作为调制的载波频率。
S903,根据所生成的载波,对待发射消息进行调制,得到已调制信号;
可以根据待发射信息中的数据,通过数控振荡器中的频率控制字或相位控制字,调整输出信号的频率,得到待发射信息的已调制信号。
在可能的实现方式中,已调制信号包括空闲时间段和数据段,经过载波调制后的所述待发射信息在所述数据段发送,所述空闲信号段为不包括谐振频率和发送数据的无信号时段。从而能够更为准确的识别数据的起始位置和结束位置,提高数据解调的准确率。
S904,将所述已调制信号转换为模拟信号,以使磁共振的耦合线圈发送所述模拟信号。
通过谐振频率确定为载波频率,从而使得已调制信号发送时,减少频率的偏移及信号的形变。
与图9所示的发射方法示意图对应的,图10提供了一种携能无线消息的接收方法示意图,包括:
S1001,通过磁共振的耦合线圈接收模拟信号。
S1002,根据预先确定的载波频率,将所述模拟信号转换为数字信号,其中,所述载波频率与所述磁共振的耦合线圈的谐振频率匹配。
所接收的模拟信号为根据谐振频率调制后的信号,因此,可以根据谐振频率,确定采样点的采样值。
为提高转换的准确率,可以预设的采样频率对所述模拟信号进行采样得到采样信号,所述采样频率大于谐振频率;根据预先确定的载波频率,确定所述采样信号对应的数字标量;将所述数字标量输入已训练的神经网络分类模型,得到所述数字标量对应的数字信号。
S1003,通过解调模块对所述数字信号进行解调处理,得到所接收的信息。
S1004,通过整流电路将所接收的模拟信号进行整流,得到传输的电能。
本申请实施例中所示的携能无线消息的接收方法、携能无线消息的发射方法,与图1所示的携能无线消息的收发系统对应。
另外,本申请还提供了与携能无线消息的发送方法对应的携能无线消息的发送装置,包括:
谐振频率确定单元,用于确定用于发射信号的磁共振的耦合线圈的谐振频率;
载波生成单元,用于根据所述谐振频率,生成用于调制的载波;
调制单元,用于根据所生成的载波,对待发射消息进行调制,得到已调制信号;
信号发送单元,用于将所述已调制信号转换为模拟信号,以使磁共振的耦合线圈发送所述模拟信号。
以及与携能无线消息的接收方法对应的携能无线消息的接收装置,包括:
信号接收单元,用于通过磁共振的耦合线圈接收模拟信号;
转换单元,用于根据预先确定的载波频率,将所述模拟信号转换为数字信号,其中,所述载波频率与所述耦合线圈的谐振频率匹配;
整流单元,用于通过整流电路将所接收的模拟信号进行整流,得到传输的电能。
图11是本申请一实施例提供的携能无线消息的发送/接收设备的示意图。如图11所示,该实施例的携能无线消息的发送/接收设备11包括:处理器110、存储器111以及存储在所述存储器111中并可在所述处理器110上运行的计算机程序112,例如携能无线消息的发送/接收程序。所述处理器110执行所述计算机程序112时实现上述各个携能无线消息的发送/接收方法实施例中的步骤。或者,所述处理器110执行所述计算机程序112时实现上述各装置实施例中各模块/单元的功能。
示例性的,所述计算机程序112可以被分割成一个或多个模块/单元,所述一个或者多个模块/单元被存储在所述存储器111中,并由所述处理器110执行,以完成本申请。所述一个或多个模块/单元可以是能够完成特定功能的一系列计算机程序指令段,该指令段用于描述所述计算机程序112在所述携能无线消息的发送/接收设备11中的执行过程。
所述携能无线消息的发送/接收设备可包括,但不仅限于,处理器110、存储器111。本领域技术人员可以理解,图11仅仅是携能无线消息的发送/接收设备11的示例,并不构成对携能无线消息的发送/接收设备11的限定,可以包括比图示更多或更少的部件,或者组合某些部件,或者不同的部件,例如所述携能无线消息的发送/接收设备还可以包括输入输出设备、网络接入设备、总线等。
所称处理器110可以是中央处理单元(Central Processing Unit,CPU),还可以是其他通用处理器、数字信号处理器(Digital Signal Processor,DSP)、专用集成电路(Application Specific Integrated Circuit,ASIC)、现成可编程门阵列(Field-Programmable Gate Array,FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
所述存储器111可以是所述携能无线消息的发送/接收设备11的内部存储单元,例如携能无线消息的发送/接收设备11的硬盘或内存。所述存储器111也可以是所述携能无线消息的发送/接收设备11的外部存储设备,例如所述携能无线消息的发送/接收设备11上配备的插接式硬盘,智能存储卡(Smart Media Card,SMC),安全数字(Secure Digital,SD)卡,闪存卡(Flash Card)等。进一步地,所述存储器111还可以既包括所述携能无线消息的发送/接收设备11的内部存储单元也包括外部存储设备。所述存储器111用于存储所述计算机程序以及所述携能无线消息的发送/接收设备所需的其他程序和数据。所述存储器111还可以用于暂时地存储已经输出或者将要输出的数据。
所属领域的技术人员可以清楚地了解到,为了描述的方便和简洁,仅以上述各功能单元、模块的划分进行举例说明,实际应用中,可以根据需要而将上述功能分配由不同的功能单元、模块完成,即将 所述装置的内部结构划分成不同的功能单元或模块,以完成以上描述的全部或者部分功能。实施例中的各功能单元、模块可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中,上述集成的单元既可以采用硬件的形式实现,也可以采用软件功能单元的形式实现。另外,各功能单元、模块的具体名称也只是为了便于相互区分,并不用于限制本申请的保护范围。上述系统中单元、模块的具体工作过程,可以参考前述方法实施例中的对应过程,在此不再赘述。
在上述实施例中,对各个实施例的描述都各有侧重,某个实施例中没有详述或记载的部分,可以参见其它实施例的相关描述。
本领域普通技术人员可以意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本申请的范围。
在本申请所提供的实施例中,应该理解到,所揭露的装置/终端设备和方法,可以通过其它的方式实现。例如,以上所描述的装置/终端设备实施例仅仅是示意性的,例如,所述模块或单元的划分,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式,例如多个单元或组件可以结合或者可以集成到另一个系统,或一些特征可以忽略,或不执行。另一点,所显示或讨论的相互之间的耦合或直接耦合或通讯连接可以是通过一些接口,装置或单元的间接耦合或通讯连接,可以是电性,机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的,作为单元显示的部件可以是或者也可以不是物理单元,即可以位于一个地方,或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外,在本申请各个实施例中的各功能单元可以集成在一个处理单元中,也可以是各个单元单独物理存在,也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用软件功能单元的形式实现。
所述集成的模块/单元如果以软件功能单元的形式实现并作为独立的产品销售或使用时,可以存储在一个计算机可读取存储介质中。基于这样的理解,本申请实现上述实施例方法中的全部或部分流程,也可以通过计算机程序来指令相关的硬件来完成,所述的计算机程序可存储于一计算机可读存储介质中,该计算机程序在被处理器执行时,可实现上述各个方法实施例的步骤。。其中,所述计算机程序包括计算机程序代码,所述计算机程序代码可以为源代码形式、对象代码形式、可执行文件或某些中间形式等。所述计算机可读介质可以包括:能够携带所述计算机程序代码的任何实体或装置、记录介质、U盘、移动硬盘、磁碟、光盘、计算机存储器、只读存储器(ROM,Read-Only Memory)、随机存取存储器(RAM,Random Access Memory)、电载波信号、电信信号以及软件分发介质等。需要说明的是,所述计算机可读介质包含的内容可以根据司法管辖区内立法和专利实践的要求进行适当的增减,例如在某些司法管辖 区,根据立法和专利实践,计算机可读介质不包括是电载波信号和电信信号。
以上所述实施例仅用以说明本申请的技术方案,而非对其限制;尽管参照前述实施例对本申请进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本申请各实施例技术方案的精神和范围,均应包含在本申请的保护范围之内。

Claims (14)

  1. 一种携能无线消息的收发系统,其特征在于,所述系统包括发射设备和接收设备,所述发射设备包括谐振信号调制模块、数模转换器和发射线圈,所述接收设备包括接收线圈、模数转换器、解调模块和整流电路,所述发射线圈和所述接收线圈为磁共振的耦合线圈,其中,
    所述谐振信号调制模块用于生成与所述耦合线圈的谐振频率匹配的载波,并根据所述载波对待发射信息进行调制得到已调制信号;
    所述数模转换器用于将所述已调制信号转换为模拟信号并将所述模拟信号输出至所述发射线圈,所述发射线圈用于发射所述模拟信号至所述接收线圈;
    所述接收线圈用于接收所述模拟信号并将所述模拟信号同时传至所述模数转换器和所述整流电路,其中所述模数转换器根据谐振线圈的谐振频率,将所述模拟信号转换为数字信号,通过所述解调模块解调处理以得到所接收的消息;所述整流电路用于将所述接收线圈所接收的所述模拟信号进行整流,得到传输的电能。
  2. 根据权利要求1所述的系统,其特征在于,所述已调制信号中的信号帧包括空闲信号段和数据段,所述数据段为信号帧中包括经过载波调制后的所述待发射信息的时段,所述空闲信号段为信号帧中无信息的时段。
  3. 根据权利要求1所述的系统,其特征在于,所述谐振信号调制模块集成有锁相环电路和数控振荡器,所述谐振信号调制模块通过所述锁相环电路生成内部时钟信号,根据所述内部时钟信号和所述待发射信息,调整所述数控振荡器中的频率控制字或相位控制字,得到所述已调制信号。
  4. 根据权利要求1所述的系统,其特征在于,所述模数转换器用于根据预设的采样频率对所述模拟信号进行采样得到采样信号;根据预先确定的载波频率,所述模数转换器确定所述采样信号对应的数字标量,并将所述数字标量通过已训练的神经网络分类模型,得到所述数字标量对应的数字信号。
  5. 根据权利要求4所述的系统,其特征在于,所述解调模块采用的所述神经网络分类模型为支持向量机分类模型,当监测到系统状态发性改变后,根据改变后的系统状态,所述解调模块采用支持向量机算法重新训练所述神经网络分类模型。
  6. 根据权利要求4所述的系统,其特征在于,所述模数转换器的采样频率大于所述谐振频率。
  7. 根据权利要求1-6任一项所述的系统,其特征在于,所述谐振信号调制模块为第一FPGA芯片,所述模数转换器为第二FPGA芯片。
  8. 一种携能无线消息的发送方法,其特征在于,所述方法包括:
    确定用于发射信号的磁共振的耦合线圈的谐振频率;
    根据所述谐振频率,生成用于调制的载波;
    根据所生成的载波,对待发射消息进行调制,得到已调制信号;
    将所述已调制信号转换为模拟信号,以便于通过磁共振的耦合线圈的发射线圈发送所述模拟信号。
  9. 根据权利要求8所述的方法,其特征在于,所述已调制信号中的信号帧包括空闲信号段和数据段,所述数据段为信号帧中包括经过载波调制后的所述待发射信息的时段,所述空闲信号段为信号帧中无信息的时段。
  10. 根据权利要求8所述的方法,其特征在于,根据所生成的载波,对待发射消息进行调制,得到已调制信号,包括:
    通过锁相环生成的内部时钟信号和待发射信息,调整数控振荡器中的频率控制字或相位控制字,得到所述已调制信号。
  11. 一种携能无线消息的接收方法,其特征在于,所述方法包括:
    通过磁共振的耦合线圈的接收线圈接收模拟信号;
    根据预先确定的载波频率,将所述模拟信号转换为数字信号,其中,所述载波频率与所述磁共振的耦合线圈的谐振频率匹配;
    通过解调模块对所述数字信号进行解调处理,得到所接收的信息;
    通过整流电路将所接收的模拟信号进行整流,得到传输的电能。
  12. 根据权利要求11所述的方法,其特征在于,根据预先确定的载波频率,将所述模拟信号转换为数字信号,包括:
    根据预设的采样频率对所述模拟信号进行采样得到采样信号,所述采样频率大于谐振频率;
    根据预先确定的载波频率,确定所述采样信号对应的数字标量;
    将所述数字标量输入已训练的神经网络分类模型,得到所述数字标量对应的数字信号。
  13. 一种携能无线消息的发送设备,包括存储器、处理器以及存储在所述存储器中并可在所述处理器上运行的计算机程序,其特征在于,所述处理器执行所述计算机程序时实现如权利要求8至10任一项所述方法的步骤。
  14. 一种携能无线消息的接收设备,包括存储器、处理器以及存储在所述存储器中并可在所述处理器上运行的计算机程序,其特征在于,所述处理器执行所述计算机程序时实现如权利要求11至12任一项所述方法的步骤。
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